New Data on the Age of Magmatic Events in Oloy Tectonic Zone, West Chukotka Area (Evidences from Zircon U–Pb Dating)
- Authors: Kara T.V.1, Tikhomirov P.L.2,3, Demin A.D.4
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Affiliations:
- LLC Polyus
- Moscow State University
- North-East Interdisciplinary Scientific Research Institute, Far East Branch, Russian Academy of Sciences
- LLC Geokhimpoiski
- Issue: Vol 489, No 1 (2019)
- Pages: 1277-1280
- Section: Geology
- URL: https://journals.rcsi.science/1028-334X/article/view/195567
- DOI: https://doi.org/10.1134/S1028334X19110114
- ID: 195567
Cite item
Abstract
The following U–Pb ages (Ma) were obtained for zircons from volcanic rocks and granitoids representing various complexes of the Nembonda Depression (the Anadyr segment of the Okhotsk–Chukotka Belt): 147.7 ± 2; 123.8 ± 1.7; 119.3 ± 1.7; 95.8 ± 0.5; and 80.55 ± 0.96. These results support the hypothesis of a significant Aptian igneous event in the Verkhoyansk–Chukotka region and provide the basis for the revision the boundaries of the Okhotsk–Chukotka Belt.
About the authors
T. V. Kara
LLC Polyus
Email: petr_tikhomirov@mail.ru
Russian Federation, Moscow, 123056
P. L. Tikhomirov
Moscow State University; North-East Interdisciplinary Scientific Research Institute, Far East Branch, Russian Academy of Sciences
Author for correspondence.
Email: petr_tikhomirov@mail.ru
Russian Federation, Moscow, 119991; Magadan, 685000
A. D. Demin
LLC Geokhimpoiski
Email: petr_tikhomirov@mail.ru
Russian Federation, Moscow, 127282